PDF malware analysis — malicious · a6eb89dad5af1d30

MALICIOUS

PDF

10.4 KB

MD5: e4fdc9a0d5d209ea1574c4fcc640b6da SHA-1: 7ce4bc3c6909aadf1f88137378478b270e187087 SHA-256: a6eb89dad5af1d3063c83da5892004b32900f6a7536ba04460bbbbec65e6d5c9

108 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious File

The file is a PDF document flagged by multiple heuristics, including ClamAV's detection of an obfuscated object name and a machine learning classifier indicating high maliciousness. The presence of an embedded file and XFA form further suggests malicious intent. The primary attack vector appears to be exploiting a PDF vulnerability to deliver a payload, as indicated by the 'ML_NYX_PDF_MALICIOUS' and 'CLAMAV_DETECTION' firings.

Machine Learning

Nyx PDF Classifier malicious score 0.9989

Heuristics 4

ClamAV: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION

ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
Embedded file low PDF_EMBEDDED

PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
XFA form low PDF_XFA

PDF uses XML Forms Architecture — can contain script logic
Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_file_obj0001.bin` `b4cfbaa5e958212eb4e9da2fb0fd89c11a56b2db0fe6cab7165a1773898fdb78`	pdf-embedded-file	PDF EmbeddedFile object 1 at offset 0x86	13408 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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